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A study was undertaken to examine the biological treatment efficiency of combined waste stream landfill leachate and municipal sewage. The ratio of sewage to leachate was 9:1 by volume. Landfill leachate was pre-treated by sonification. The sonification of the leachate was carried out in static condition using the disintegrator UD-20, the field frequency of 20 kHz and amplitude of 12 μm. For the laboratory...
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